Machine for cleaning, grinding, finishing, and polishing of parquetted floors and similar surfaces.



P. A. FISKER. MACHINE FOR CLEANING, GRINDING, FINISHING, AND POLISHING 0F PARQUETTED FLOORS AND SIMILAR SURFACES. APPLICATION mm oqrjza. m4.

Patent-ed May 1, 1917.

2 SHEETS-SHEET I T l c'lnesses P. A. FISKER. MACHINE FOR CLEANING, GRINDING, FINISHING, AND POLISHING 0F PARQUETTED-FLOORS I AND SIMIIAR SURFACES- I' APPLICATION FILED OCT. 28. 1914. 1,224,292.

i I Patented May 1, 1917. 2 SHEETS-5HEET 2 Iii? ' machines.

PEDEB .ANDERSEN FISKER, 0F FREDERIKSBERG, NEAR COPENHAGEN, DENMARK.

MACHINE FOR CLEANING,-GRINDING, FINISHING, AND POLISHING OF PARQUETTED FLOORS AND SIMILAR SURFACES.

Specification of Letters Patent.

Patented May 1, 1917.

Application filed October 28, 1914. Serial No. 869,059.

To all whom it may concern:

Be it known that I, 'PEDER ANDERSEN Fis- KER, a subject of the King of Denmark, residing at'Frederiksberg, near Copenhagen,

Denmark, have invented certain new and.

useful Improvements in Machines for Cleaning; Grinding, Finishing, and'Polishing of Parquetted Floors and Similar Surfaces, of

which the following is a full, clear, and exact description.

The invention relates to floor finishing of this kind have the'drawback that their brushes, which are either rotating on the axis of the machine or reciprocate in one direction toward the middle of the machine,

- either only to a small extent or as a rule not at all work the parquetting staffs in the.

right directions, i. e. lengthwise as well as crosswise of the fibers of the wood.' The rotating brushes never work completely in I the direction of the fiber of the wood, and

- vegh'small.

the brushes reciprocating in single direction can under the most favorable circumstances only be brought to work the wood in both directions by'rbeing continuously: turned, and their field of working is in such case by oneor more brushes or by substitution of the brushes by other organs of adiflerent size, form and nature be used under many different circumstances and for various ob.-

ects. Further it s possible to use one or more of the brushes for. rubbing in of wax and the rest of the brushes for polishing, so

that these operations can be carried out in immediate succession without interchanging of brushes or use of special applying apparatus. 'Two modifications of the invention are shown in the drawings wherei Figure 1 shows a vertical section of the machine,

Fig. 2 a horizontalsection of the same,

The hitherto existing machines Fig. 3 a detail in section on the line AB, Fig. 2,

Fig. 4 a vertical section of another modification,

and

Fig. 6 a detail in section on the line CD. in Fig. 5.

a, Fig. 1 is an electro-motor of known construction the casing of which extends downwardly into a square dish I). The

downwardly bent edgeof the dish I) rests against the upwardly bent edge of the like-- wise square dish 0, and between the dishes I) and c which are kept together by four bolts (1, is thus formed a closed hollow space in which are located the movable parts protected against the influence of dust. The shaft 6 of the electro-motor is on its lower most end provided with a geanf engaging with a gear 9, which is turnably suspended on the shaft h journaled in the dish 6, At a suitable distance from the middle of the gear 9 is arranged a pivot 70 on which one end of the connection rod m can rotate. The other end of the-connection rod engages a pivot n, which is fastened to the slide 0, which latter by means of the links p and the pivots g is in movable connection with the slides so that the gear 9 by means of the connection rod m is able to move all of the slides contemporaneously. The dish- 0 is provided with the guidesr between which the slides a can move, and between the guides r are oblong openings in the dish 0, through which are led the pivots 9 connecting the slides 0 with the corresponding slides s traveling on the guides 25, which are arranged on'the undermost side of the corresponding to the oblique edge won the fastening piece y for the brushes. The fas- Fig. 5 a horizontal section of the same,

dish 0. On the slides's, which are of such size that they constantly keep the openings.

tening piece y has an outwardly pointing obliquely arranged edge 2 in the opposite direction of the edge 00, against which edge is pressed the supporter 2, which is eccentric and turnable on the pivot 1, the eccentrical side of which is formed as an oblique surso that two oppositely arranged brushes are contemporaneously carried toward and two' oppositely arranged brushes away from the middle.

According to the modification shown'in Figs. 4, 5 and 6 a gear 5 is arranged in firm connection with the on the pivot h, which gear 5 engages with a gear 6 which is in firm connection with the cam disk 7 and turnson the pivot.8.,

The disk 7 acts on the rolls 9 which turn on pivots 10 which are arranged in firm connection with the slides 11. The four pivots 10 are connected in pairs'by means of the links 12, as shown.

If now the motor is started, the motion be connected those which are effected by polishing by hand. Further, it is evident that in case the parquetted floor consist of stafis which are laid perpendicular to one another, which is generally the case, two of work the wood in the direction of its fibers, while the two other brushes the fibers, and it is a. matter of fact that the most speedy, finest and most thorough grinding and polishing of wooden surfaces is obtained by working the surface in different reciprocating directions Instead of four even-sized brushes the machine may, where special circumstances might make it desirable, be provided with two large and two small oppositely disposed gear 9 and turnable or eccentrics may be used in of different operations, such as rubbing in of wax and polishin the floor, also the maneuvering-stick 3, ig. 1, being arranged turnable, for instance on a ring 4, which can be secured in various 'ositions, permits the machine to be carried aheadwith one of the sides or one of the corners foremost, dependent on what might be desirable with a view to the manner of working of the special brushes.

Having. now described my said invention and in what manner the same Is to be performed, what I claim and desire to secure by Letters Patent of U. S. Ais:

1. A machine for cleaning, grinding, polishing or finishing of parquetted floors and similar surfaces comprising a motor, tools adapted to work the said surfaces, said tools ing arranged in pairs and a transmission adapted to move two opposite. tools toward the center of-the machine and contemporaneously two other tools away from the same.

2. A machine for clean mg' grinding lishing or finishing of parquetted floors iiiid similar sitely arranged date tools for working each slide having .an oblique bent edge, means enabling the said motor to reciprocate the said slides in pairs contemporaneously toward and away from the center of the machine, a ning piece for the tools having an oblique edge and means for securing the said fastening piece to the said sljdesd h f lean 3. mac ine or 0 ing, grinding, polishing or finishing of parquetted doors and similar surfaces comprising a motor, tools for working of the said surfaces, meansenabling the said motor toreciprocate the said tools in pairs contemporaneously toward PEDER ANDEBSEN F'ISKER. Witnmegzv (hon. SCHOU Vmao Bum. 

